Answer:
Step-by-step explanation:
a little late but...
question 1)
average rate of change is asking for the slop of a line.
so lets use the slope formula
m=f(b)-f(a)/(b-a)
m=1/2(6)^2-1-(1/2)(2)^2-1/(6-2)
m=17-1/4
m=4
In question 3)
officially x is all real numbers! but because of the question asked it must be restricted to 129. that is how many years have passed from 1880 to 2009.
